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Content available Determination of methane content at Maokhe coal mine from curent mining to -450 level in Vietnam
Nguyen VanThinh, Nguyen CaoKhai, Nguyen VanQuang, Tran XuanHa
Inżynieria Mineralna
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2019
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R. 21, nr 2/2
2--7
EN
Methane gas is one of the most serious dangers of underground coal mining as its buildup can lead to methane gas explosion. In QuangNinh province- Vietnam, several coal mines such as TrangKhe II-III coal mine, Khe Cham coal mine, especially MaoKhe mine that have high methane content. At the MaoKhe coal mine,experimental data showed thatthe concentration of methane in coal seams at different depths were not similar.In order to ensure safety, this report has been undertaken to determine a pattern of changing methane contents of coal seams at different exploitation depths in MaoKhe underground coal mine.
2
Content available Assessing the current status of underground mine ventilation system in ThanhCong- CaoThang area, HonGai coal company, QuangNinh region, Vietnam
Nguyen CaoKhai, Nguyen VanThinh, Nguyen VanQuang
Inżynieria Mineralna
|
2019
|
R. 21, nr 2/2
45--51
EN
In underground mine ventilation, there are many causes affecting the efficiency of mine ventilation, even affecting mine safety. In order to have an effective mine ventilation system, the research and evaluation of mine ventilation, in order to get timely solutions to improve the efficiency of mine ventilation, is essential and must be done. regularly. Thanh Cong - Cao Thang coal mine area of Hon Gai Coal Company, Quang Ninh region, Vietnam is a mine exploited underground. The nature of this mine is the consolidation (connecting) of Thanh Cong areas and CaoThang areas in the period of 2016. After consolidation into Thanh Cong - Cao Thang mine, many factors in the mine ventilation system of The mine site is altered and affects the efficiency of mine ventilation. This article has analyzed and evaluated the current status of Thanh Cong - Cao Thang Area Ventilation System to help research and select appropriate solutions to promptly improve the efficiency of mine ventilation and ensure security, ensure a safe environment and reduce the cost of mine ventilation.
3
Content available Application of information technology to improve the management of mineral resources in Quang Ninh province - Vietnam
Dao Van Chi, Nguyen CaoKhai, Le Tien Dung, Zhang Leilin
Inżynieria Mineralna
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2019
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R. 21, nr 2/2
217--222
EN
The current mining operation of mineral resources in Quang Ninh province-Vietnam is increasingly complicated. Correspondingly, the management of the mine sites becomes more difficult. Records and documents of minerals and mine sites are archived in different forms. Database systems are stored dispersedly and insufficiently; in many cases lack accuracy, topicality and have not been linked to each other systematically. These lead to many difficulties in accessing and extracting information for the implementation of management as well as for investors and people with related interest. In this paper an advanced software has been developed for the management of mineral resources and has been applied for Quang Ninh province. The software has improved the supervision and administration of the mining operation in the province.
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